SD and USB in a head unit would be GREAT features. I'll wait until the big boys (Sony, Pioneer, etc) catch on and provide 2 powered USB ports for portable HDD's that need a little extra juice. I'll also be waiting to see what methods of cataloging/indexing will become available as more and more folks start plugging portable HDD's and large flash media drives into their head units. I know that with 70 GB of music even my desktop has trouble presenting me with THAT many songs in a quick and easy format. At a minimum these things should have the ability to read playlists in several different formats and sort and filter based on title, album, artist, and genre.
Calmini Cone Air Filter, PowerVault PV2 Muffler, OME Trooper Springs, Rancho RS9000X Shocks, 285/75R16 Nitto Grappler AT's, Pioneer DEH P8000R In-Dash CD, Amps and Drivers Built by Orion, Wires and Fuse Blocks by KnuKonceptz, Vibration Damping by BQuiet, Alarm System featuring Auto Start and Remote Windows, Yakima LoadWarrior w/Full Size Spare, Debadged/Custom Titanium Grill Logo, Tint (5% Rear / 20% Front), Steel Braided Brake Lines, G2 Painted Calipers